Journal
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
Volume 118, Issue 7, Pages 4279-4288Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/jgra.50417
Keywords
Hall magnetic reconnection; FTE; Shear flow; Magnetospheric Interactions with the Solar Wind
Categories
Funding
- 973 project [2011CB811404]
- NSFC [41274168, 11005015, 41104112, 41074105, 11261140326]
- Doctoral Fund of Ministry of Education of China [20090001110012]
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Magnetic reconnection driven by an out-of-plane shear flow is carried out based on the three-dimensional Hall magnetohydrodynamics (MHD) code. The simulation results indicate that an out-of-plane shear flow can drive a secondary tearing instability to quickly form a magnetic island without a guide field or a flux rope with a guide field. It is found that the size of the flux rope within similar to 240 Alfven time reaches about 20a (a is the initial current sheet thickness) that is roughly one Earth radius, the typical scale of Flux Transfer Event (FTE) observed at the dayside magnetopause. From a special simulation case based on the THEMIS data, it is found that an observed FTE is well reproduced by the Hall MHD simulation, which may give some clues on the generation mechanism of FTE.
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